JP3419903B2 - Film carrier and photographic film separation prevention method - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a film carrier and
More specifically, the present invention relates to a method for preventing separation of a photographic film , and more specifically, a film carrier and a film carrier for transporting the photographic film to position the image frame recorded on the photographic film at an exposure position for printing exposure on a photosensitive material.
The invention relates to a method for preventing photographic film detachment in a carrier .

[0002]

2. Description of the Related Art Conventionally, in a film carrier provided in a photographic printing apparatus, a worker presses a passkey after printing and exposing a photosensitive material of an image frame, and a passkey signal is transmitted. Each time it is input, the photographic film is transported to newly position the image frame. That is, when an instruction signal (passkey signal) representing an instruction to convey the photographic film and position the image frame recorded on the photographic film at the exposure position for printing on the photosensitive material is input, the film carrier detects the signal. The photographic film is conveyed and the image frame is positioned at the exposure position in accordance with the instructions. Then, the photographic printing apparatus prints and exposes the image frame newly positioned at the exposure position on the photosensitive material. As described above, the conventional film carrier carries one image frame each time an instruction signal is input to position the image frame.

However, if the conveyance of the photographic film for one image frame is continued every time the instruction signal is input, the instruction signal is further input after the printing exposure of the final image frame closest to the trailing edge of the photographic film is completed. If this happens, the photographic film may be transported further, resulting in the photographic film separating from the film carrier. in this way,
When the photographic film is detached from the film carrier, the operator has to reload the photographic film into the film carrier, resulting in a heavy burden on the operator.

[0004] The present invention has been made in view of the aforementioned, not separated photographic film end from a film carrier, even if it is an input or an instruction signal the film carrier and the
An object of the present invention is to provide a method for preventing photographic film detachment in a film carrier .

[0005]

In order to achieve the above object, the invention according to claim 1 is arranged at an exposure position for conveying a photographic film and printing an image frame recorded on the photographic film on a photosensitive material. Input means for inputting an instruction signal representing an instruction to position an image frame, image frame detecting means for detecting the image frame, photographic film edge detecting means for detecting the photographic film edge on the upstream side in the transport direction, and the photograph a determination unit image frame located at the position closest to the film end to determine whether or not located in the region of the downstream side from the unrealized the exposure position the exposure position, of the photographic film
Of these, the monitor that shows the part located at the exposure position
In the case where the judgment result is a negative judgment and the image frame for the next printing exposure detected when the instruction signal is input is located at the exposure position, and the judgment result is a positive judgment. If the above instruction signal is input ,
In front of the position projected on the monitor in the exposure position
Make sure that the edge of the detected photographic film is positioned
After the true film edge is detected, the photographic film edge detection
And a conveying means for conveying the photographic film by a distance from the step to the position .

The invention according to claim 2 carries a photographic film.
The image frame recorded on the photographic film after being sent is a photosensitive material.
Position the image frame at the exposure position for printing
Input means for inputting an instruction signal indicating an instruction to
This is a method to prevent the photographic film from coming off in the film carrier.
Is closest to the edge of the photographic film on the upstream side in the transport direction.
The image frame located at the position includes the exposure position and the exposure position
It is determined whether or not it is located in the area downstream of the storage position in the transport direction.
Step and position at the exposure position of the photographic film
The step of displaying the portion to be placed on the monitor and the judgment
If the result is negative, and the instruction signal is input
If the image frame to be exposed next is detected,
When the judgment result is affirmative, it is located at the exposure position.
And the exposure signal is input, the exposure position
It is detected at the position projected on the monitor in the storage
Photographic film so that the edge of the photographic film is located
After the edge is detected, the position is detected by the photographic film edge detection means.
The step of transporting the photographic film by the distance to the storage
And are equipped with.

[0007]

In the invention according to claim 1, the input means inputs the instruction signal. Here, the instruction signal is a signal representing an instruction to position the image frame at the exposure position for conveying the photographic film and printing and exposing the image frame recorded on the photographic film on the photosensitive material.

The image frame detecting means detects the image frame, and the photographic film edge detecting means detects the photographic film edge on the upstream side in the transport direction.

[0009] determination means, unrealized said exposure position image frame is the printing position located closest to the photographic film end
It is determined whether or not it is located on the downstream side in the transport direction.
The monitor is the part of the photographic film located at the exposure position.
Show minutes.

When the result of the judgment is negative and the image signal for the next printing exposure detected by the image frame detecting means is located at the exposure position, the carrying means detects the image signal when the instruction signal is input. Then, the photographic film is conveyed.

As described above, when the conveying means conveys the photographic film, the image frame located closest to the edge of the photographic film comes to be located in the downstream area including the printing position in the conveying direction. Therefore, the determination result of the determination means is a positive determination.

When the judgment result of the judging means is a positive judgment and the instruction signal is inputted, the conveying means detects the position at the position projected on the monitor in the exposure position.
The photographic film is conveyed so that the edge of the photographic film is positioned .

That is, the transport means is a monitor in the exposure position.
The edge of the photographic film detected above will appear at the position
So that the photo film edge is detected,
The distance from the true film edge detection means to the position
Carry the film.

In this way, when the image signal located at the position closest to the edge of the photographic film when the instruction signal is input is located in the downstream area in the transport direction including the printing position, the exposure position is set.
The above detected photo in the position that is displayed on the monitor inside
The photographic film edge is detected so that the film edge is located.
Distance from the edge of the photographic film to the position
Since the photographic film is separated and conveyed, it is possible to prevent the photographic film from separating from the film carrier due to the input of the instruction signal. The following inventions are proposed for preventing the photographic film from coming off from the film carrier in this way. That is, as described in claim 2, the photographic film is conveyed and the photographic film is conveyed.
The image frame recorded on the film is printed and exposed on the photosensitive material.
Represents an instruction to position the image frame at the exposure position for
Film carrier provided with input means for inputting an instruction signal
A method for preventing photographic film detachment in
Located closest to the edge of the photographic film on the upstream side in the direction
The image frame includes the exposure position and is in the transport direction from the exposure position.
The step of determining whether it is located in the downstream area,
The portion of the photographic film located at the exposure position is modeled.
The step of displaying on Nitter and the above judgment result is negative judgment
In the case of
The image frame to be printed and exposed next is placed at the exposure position.
When the result of the judgment is affirmative,
When a display signal is input, the monitor in the exposure position is
The detected photographic film at the position projected on
The photographic film edge is detected so that the edge is located.
From the photographic film edge detection means to the position
Minutes, the step of transporting the photographic film,
There is.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 schematically show a printer processor 10 according to this embodiment. A photo printing unit 12 which constitutes a printer unit of the printer processor 10.
Has a structure in which the paper magazine 14 accommodating the printing paper P can be loaded.

A cutter 22 is arranged on the conveying path of the photographic printing paper P drawn out from the paper magazine 14, and a supporting base 46 is arranged further downstream. A winding roller 52 around which the endless belt 44 is wound is arranged between the support base 46 and the cutter 22. Further, a nip roller 54 that holds the endless belt 44 between the winding roller 52 and the winding roller 52 is arranged above the winding roller 52.

A guide roller 56 around which the endless belt 44 is wound is located on the downstream side of the support table 46 in the photographic paper transporting direction. A pressing roller 58 is disposed adjacent to the guide roller 56 so that the lower surface thereof has substantially the same height as the upper surface of the winding roller 52. The pressing roller 58 presses the outer circumference of the endless belt 44. ing. Further, the endless belt 44 is wound around the tension roller 62 below the guide roller 56, and the endless belt 44 is rotated clockwise in FIG. 1 by the driving force of a motor (not shown).

An easel device 64 is provided above the endless belt 44 which moves on the support base 46. When printing an edged image on the printing paper P, a movable piece (not shown) in the easel device 64 is provided. Covers the periphery of the photographic printing paper P.

The upper part of the photo printing unit 12 is the work table 1
1 and the operation panel 11A is arranged.
The operation panel 11A is provided with a pass key as an input means. When the pass key is pressed, an instruction signal representing an instruction to carry one image frame in order to print and expose the next image frame is input. The operation panel 11A
Is provided with an exposure start key that gives an instruction to start exposure.

A light source device 96 is arranged on the back side of the work table 11 (right side in FIG. 1). Further, on the work table 11, a liquid crystal display device 18 is arranged at a position adjacent to the light source device 96. In addition, the light source device 96
Is provided with a diffusion box 28 that diffuses the light from the light source device 96 and bends the burning optical axis by approximately 90 °.

The bent optical axis is perpendicular to the work table 11, and this light ray is transmitted through the negative film N on the negative carrier 30 installed on the upper surface of the work table 11.

Further, a density measuring device 40 for measuring the density of the negative film N is arranged in the photographic printing section 12, and an exposure correction value at the time of printing exposure is set based on the measured data. The measured data measured by the density measuring device 40 is output to the controller 182, and the controller 182 outputs the negative film N based on the input data.
The liquid crystal display device 18 is projected. A zoom lens 38 is provided below the density measuring device 40, and a black shutter 41 is provided in the optical path between the zoom lens 38 and the easel device 64.

In the above construction, the photographic printing section 12 cuts the photographic printing paper P sent from the paper magazine 14 into a desired length with the cutter 22, and positions it on the support base 46 which is a position on the optical axis S of the exposure light beam. Then, the image recorded on the negative film N is printed.

The photographic printing paper P on which the image has been printed is conveyed to a processor section 72 for carrying out the processes of developing, bleach-fixing, washing and drying through a conveying path 60 constituted by a plurality of pairs of rollers. It has become.

The processor section 72 is provided with a developing tank 74, a bleach-fixing tank 76, and a washing tank 78, and the photographic paper P is conveyed in a substantially U-shape in each tank for developing, bleach-fixing and washing. Each process is performed.

The photographic printing paper P that has been washed with water is conveyed to the drying section 80, and the drying air blown from the chamber 82 is fed to the photographic printing paper P.
It is dried by applying heat.

A conveying path 84 constituted by a plurality of pairs of rollers is provided downstream of the drying section 80 in the conveying direction of the printing paper P.
The photographic printing paper P discharged from the drying unit 80 after the drying process is completed is sandwiched between the plural pairs of rollers, discharged to the outside of the printer processor 10, and stacked.

The negative carrier 30 will be described in detail below. As shown in FIGS. 3 and 4, the negative carrier 30 includes a cover 112 that can be opened and closed with respect to the base 31.
Is attached. A negative film passing portion 30A is formed on the base 31, and a mask (also referred to as an under negative mask) 118 is attached to a part (near the central portion) of the negative film passing portion 30A so as to correspond to the rectangular through hole.

On the other hand, in the vicinity of the rotation axis of the cover 112, a holder 114 which is rotatably attached to the base 31 similarly to the cover 112 is provided, and a crimping plate (also called an upper negative mask) 116 is attached. There is. The mask 118 and the upper negative mask 116 are formed with windows 119A and 119B corresponding to image frames.

The upper negative mask 116 includes the cover 11
In the closed state of No. 2, the negative film N is arranged with a gap so that the negative film N can be conveyed with respect to the under negative mask 118. By energizing the solenoid 117 in this state, the upper negative mask 116 is Is moved in the direction of the under negative mask 118 by the magnetic force of the solenoid 117 so that the negative film N can be held.

As shown in FIG. 4, this negative carrier 30
A motor 152 is attached to the motor, and a timing belt 156 is wound around the pulley 154.

The timing belt 156 is also wound around the pulley 140C attached to the drive rollers 132, 134, 136, 138, and the drive force of the motor 152 drives the drive rollers 132, 134, 136, 13.
8 is configured to rotate. An encoder (not shown) is attached to the drive roller 132, and the concoder uses one pulse each time the drive roller 132 rotates by a predetermined amount.
It is adapted to output to the controller 182.

Drive rollers 132, 134, 136, 13
8 corresponds to driven rollers 142, 144, 146, 148 rotatably attached to the cover 112, and drive rollers 132, 134, 136, when the cover 112 is closed.
138 and driven rollers 142, 144, 146, 148
Thus, the negative film N is sandwiched, and as a result, the negative film N is conveyed along the negative film passing portion 30A.

In the negative film passing portion 30A, upstream of the drive roller 132 in the negative film transport direction, a photographic film edge detecting means comprising a light emitting element for emitting light and a light receiving element for receiving light from the light emitting element is provided. The edge detection sensor 172 is arranged. When the light from the light emitting element is blocked by the negative film N, the trailing edge detection sensor 172 does not output a signal to the controller 182, and the light receiving element receives the light from the light emitting element by the negative film N. In this case, the signal is output to the controller 182. Also, the drive rollers 132 and 1
A splice tape detection sensor 174 including three pairs of light emitting elements that emit light for detecting the splice tape and a light receiving element that receives light from the light emitting elements is disposed between the light emitting element and the light emitting element.

On the downstream side of the splice tape detection sensor 174 in the negative film transport direction, an edge detection sensor 176 as an image frame detection means for detecting the edge of the image frame.
Are arranged. The edge detection sensor 176 is a line sensor, detects the density of the negative film N, and outputs a signal to the controller according to the detected density. Here, since the image frames of the negative film N have a high density and the regions other than the image frames have a low density, the signal output to the controller is turned on when the regions other than the image frames are located at the edge detection sensor 176. However, when the image frame is located on the edge detection sensor 176, the signal output to the controller is turned off.

These sensors 172, 174, 176
Are connected to the controller 182 together with the motor 152, the operation panel 11A, and the liquid crystal display device 18 described above. The motor 152, the pulleys 140C, 15
4, timing belt 156, drive rollers 132, 13
4, 136, 138, driven rollers 142, 144, 14
6, 148 and the controller 182 correspond to the carrying means of the present invention.

Next, the operation of this embodiment will be described with reference to the flowchart (FIG. 5) showing the main routine of this embodiment.

First, the worker sets the leading image frame of the negative film N in an exposure-enabled state. That is, the cover 1
12 is opened and the window portion 1 of the under negative mask 118 is opened.
After arranging the first image frame of the negative film N on 19A, the holder 114 is rotated to move the upper negative mask 116.
Is brought into contact with the mask 118. And the solenoid 11
7 is energized, the negative film N is sandwiched between the mask 116 and the mask 118, and the cover 112 is closed.

As described above, when the leading image frame is set to the exposure-enabling state and the exposure start key of the operation panel 11A is turned on, the photographic printing paper P is exposed by the light from the light source device 96. The photographic printing paper P that has been printed and exposed passes through the transport path 60 and is sent to the processor 72.
First, the inside of the developing tank 74 is conveyed in a substantially U-shape for development processing, and then the inside of the bleach-fixing tank 76 and the washing tank 78 are conveyed in substantially U-shapes so that the bleach-fixing processing and the washing processing can be performed, and the drying section 80 Be transported to. The printing paper P discharged from the drying unit 80 is sandwiched between a plurality of pairs of rollers, discharged to the outside of the printer processor 10, and stacked.

When the printing exposure is completed in this way, the operator turns on the pass key of the operation panel 11A in order to carry one image frame in order to print the next image frame. Therefore, in step 202, it is determined whether the passkey is turned on. When the passkey is turned on, step 20
In step 4, it is determined whether the time T is longer than the predetermined time T0, so that the image frame (hereinafter referred to as the final image frame) located closest to the end of the negative film on the upstream side in the transport direction is detected by the edge detection sensor 176. Judge whether it has passed or not. If the determination is negative, there is an image frame that has not been subjected to printing exposure, so in step 206, one image frame is conveyed and the process returns to step 202.

Hereinafter, the final image frame is the edge detection sensor 1
A determination method for determining whether the vehicle has passed through 76 will be described.

FIG. 6 shows an interrupt processing routine executed by being interrupted by turning on / off the signal output from the edge detection sensor 176.

As described above, the edge detection sensor 176
Turns on and off the signal output to the controller according to the detected density of the negative film N, the processing routine is executed by switching the signal output from on to off and from the signal output from off to on. , Step 222
Then, by determining whether the signal output from the edge detection sensor 176 is switched from OFF to ON, it is determined whether the edge on the upstream side in the transport direction of the image frame has passed the edge detection sensor 176. That is, although the image frame is located on the upstream side in the transport direction with respect to the edge detection sensor 176 and the edge detection sensor 176 has turned off the signal output, when the edge passes the edge detection sensor 176, the edge detection sensor 176 outputs The signal output of turns on. In this way, when the upstream edge of the image frame in the transport direction passes through the edge detection sensor 176 and the signal output from the edge detection sensor 176 changes from OFF to ON, step 2
At 24, the timer is driven to detect the time T from the time when the upstream edge of the image frame in the transport direction has passed the edge detection sensor, and the interrupt processing routine is ended. A soft timer (not shown) of the controller 182 is used as this timer.

The upstream edge of the image frame in the transport direction passes through the edge detection sensor 176, and the negative film N is transported, and the downstream edge of the next image frame in the transport direction passes through the edge detection sensor 176. Then, the signal output of the edge detection sensor 176 comes to be turned on. As a result, this routine is interrupted and executed. In this case, the signal output of the edge detection sensor 176 is turned on, but is turned off when the edge on the downstream side in the transport direction of the image frame passes through the edge detection sensor 176, so the determination in step 222 is denied. , Step 22
Go to 6. In step 226, the timer drive is turned off, the time T is set to 0, and the interrupt processing routine is ended.

Here, from the time when the negative edge of the negative film N is conveyed and the upstream edge of the image frame for which printing exposure has been completed passes the edge detection sensor 176, the downstream edge of the next image frame in the conveying direction is detected. Since the recording interval of the image frames recorded on the negative film N is determined in advance, the time until the sensor passes the sensor 176 is the constant time T0.
It is set to.

On the other hand, after the edge of the final image frame on the upstream side in the transport direction has passed the edge detection sensor 176, the edge detection sensor 176 is detected by the passage of the edge of the next image frame.
The signal output from is not turned off, the timer remains driven, and the time T becomes longer than the time T0. Therefore, by determining whether or not the time T is longer than the time T0, it is possible to determine whether or not the final image frame has passed the edge detection sensor 176.

Here, when the pass key is turned on with the final image frame located at the edge detection sensor 176,
The processing of steps 204 and 206 is performed, and the state is waited for the passkey to be turned on in the state where there are P0 image frames that have not been printed and exposed. When the passkey is turned on, the determination in step 204 is denied, and in step 208, it is determined whether or not P0 image frames have been conveyed. When the determination is negative, the negative film N is conveyed by one image in step 206, and the process returns to step 202.
In this way, when P0 image frames are conveyed,
The printing exposure of the final image frame is completed, the determination in step 208 is negative, and it is determined in step 210 whether the flag F is set to 1. If the determination is negative, the negative film N is conveyed by one image in step 206. On the other hand, if the determination in step 210 is affirmative,
In step 212, the negative film N is conveyed by the distance L, and this processing is ended.

Here, the distance L will be described. FIG. 7 shows an interrupt processing routine that is executed when a signal from the rear end detection sensor 172 is input.

As described above, when the trailing edge of the negative film N passes through the trailing edge detecting sensor 172 and the controller 182 inputs the signal from the trailing edge detecting sensor 172, the trailing edge of the negative film N is detected. Therefore, the flag F is set to 1. Then, in step 234, the routine shown in FIG. 8 is started. FIG. 8 shows a routine for detecting the distance L from the rear end of the negative film N to the center position of the window 119A. The routine (FIG. 8) is repeatedly executed every time a pulse is input from the encoder attached to the driving roller 132 after being driven in step 234 of the routine (FIG. 7) described above. That is, when a pulse is input from the encoder, step 23
At 6, the distance L0 corresponding to one pulse from the encoder is subtracted from the distance L from the rear end detection sensor 172 to the center position of the window 119A, and the routine is ended. in this way,
From the distance L from the rear end detection sensor 172 to the center position of the window 119A, the distance L0 corresponding to one pulse from the encoder
Is subtracted, it is possible to detect the distance L from the rear end of the negative film N passing through the rear end detection sensor 172 to the center position of the window 119A.

Thus, in step 210, the flag F
When it is determined that is set to 1, when the negative film N is conveyed by the distance L in step 212,
The rear end of the negative film N is located at the center position of the window 119A.

As described above, in this embodiment, when the passkey is turned on in the state where the printing exposure of the final image frame is completed and the trailing edge of the negative film N is detected, the trailing edge of the negative film N is detected. Is located at the center of the window,
The negative film does not come off from the negative carrier,
It is possible to eliminate the labor burden on the operator who reloads the negative film into the negative carrier.

Further, in the above-described embodiment, since the rear end of the negative film N is located at the center position of the window 119A as described above, the worker can use the diffusion box 28 shown in FIG.
The trailing edge of the negative film N located at the central position of the window 119A can be recognized through the gap between the negative carrier 30 and the negative carrier 30, and thus it can be known that there is no image frame to be printed and exposed next. Further, when the liquid crystal display device 18 for projecting the negative film N is provided as in the above-described embodiment, the rear end of the negative film N is projected on the monitor of the liquid crystal display device 18, so that the next printing exposure is performed. You can know that there are no image frames to be displayed.

In the embodiment described above, the negative film N
The first image frame is manually arranged in the window 119A, but the invention is not limited to this, and the first image frame may be automatically arranged in the window 119A.
That is, the negative film N is set so that it can be nipped and conveyed by the driving roller 132 and the driven roller 142, the negative film N is started to be conveyed, and the edge detection sensor 176 detects the edge of the leading image frame. In this case, the negative film N may be conveyed and stopped for the distance from the edge detection sensor 176 to the window 119A.

Further, in the above-described embodiment, when the passkey is turned on in the state where the printing exposure of the final image frame is completed and the trailing edge of the negative film N is detected, the trailing edge of the negative film N is opened. Although it is located at the central position of 119A, it is not limited to this, and other positions,
For example, it may be located at any position within the range of the window 119A other than the central position of the window 119A, or near the upstream side of the roller located at the most downstream side in the transport direction in the transport direction.

Further, in the above-mentioned embodiment, an example in which the negative film N is conveyed in only one direction has been described, but the present invention is not limited to this, and the negative film N may be reciprocated. That is, in this case, a sensor having the same function as the edge detection sensor 176 (see FIGS. 3 and 4) is arranged on the side opposite to the edge detection sensor 176 with respect to the window 119A. Then, for example, while transporting in the transport direction of the above-described embodiment (outward direction of the negative film N),
The operator refers to the liquid crystal display device 18 and operates the operation panel 11
By turning on the positive image conversion key A, the image of the image frame to be printed and exposed is selected and converted into a positive image. In this case, the number of the selected image frame is stored.
When the processing is completed, the negative film N is conveyed in the reverse direction this time. In this case, the rear end of the negative film N is the window 1
Since the negative film N is located at the center position of 19A (or the other position described above), the negative film N is not separated from the negative carrier, and the negative film N can be reliably conveyed in the reverse direction. And, for example, the negative film N
When the image frame located at the rear end (the front end when the negative film N is conveyed in the reverse direction) is selected, a sensor arranged on the opposite side of the window 119A from the edge detection sensor 176 is used. When the image frame is detected, the negative film N is conveyed from the sensor to the window 119A and is exposed by printing. Then, each time the passkey is turned on, the printing exposure of the selected image frame is performed.

As described above, even when the image frame is printed and exposed by reciprocating the negative film N, the rear end of the negative film N is located at the center position of the window 119A (or other position described above). The film N can be reliably conveyed in the opposite direction, and the operability is improved.

Further, in the above-mentioned embodiment, the image frame of one negative film is printed and exposed. However, the invention is not limited to this, and a plurality of negative films are connected by a splice tape to form an image frame. A printing process may be performed. In this case, when the splice tape is detected by the splice tape detection sensor 174 and all the image frames of one negative film are printed and exposed, the rear end of the negative film is positioned at the central position of the window 119A. (Or other positions described above), the operator refers to the liquid crystal display device 18 or through the gap between the diffusion box 28 and the negative carrier 30 to the center position of the window window 119A. Referring to, the driving of the motor is instructed so that the leading image frame of the next negative film is positioned at the center position of the window 119A.

As described above, when a plurality of negative films are connected by the splice tape to print the image frames, the photographic papers P may be sorted and stacked corresponding to the negative films. . That is, a stocker is provided above the processor unit 72 that discharges and stacks the printing paper P discharged from the drying unit 80 after the drying process is completed, and the stocker is moved according to the detection of the splicing tape to move each negative film. It is also possible to sort the printing papers P on which the image frames are printed and exposed and stack them on each stocker.

Further, in the above-mentioned embodiment, the example using the negative film has been described, but the invention is not limited to this.
For example, a photographic film such as a positive film may be used. Further, although the example in which the line sensor is used as the edge detection sensor has been described, the invention is not limited to this, and a two-dimensional image sensor such as a CCD camera may be used.

Further, in the above-described embodiment, the next image frame is conveyed by a predetermined amount because it is located at the exposure position, but the present invention is not limited to this, and there is a one-to-one positional relationship with the image frame. A notch is provided by using a notch detection sensor, for example, a sensor including a light emitting element that emits light and a light receiving element that receives the light, or a two-dimensional image sensor such as a CCD camera. The image frame may be located at the exposure position based on the above.

[0062]

As described above, claim 1 and claim
In the invention described in 2 , when the instruction signal is input and the image frame located closest to the edge of the photographic film is located in the area on the downstream side in the transport direction including the printing position, the image frame is exposed within the exposure position.
The photo file detected above is displayed at the position displayed on the monitor.
The photographic film edge is detected so that the rum edge is located.
From the photographic film edge detection means to the position
Therefore, since the photographic film is conveyed, it is possible to prevent the photographic film from being separated from the film carrier due to the input of the instruction signal.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a printer processor according to an embodiment.

FIG. 2 is a perspective view showing a printer processor according to the present embodiment.

3 is a sectional view taken along line IV-IV of FIG.

FIG. 4 is an enlarged cross-sectional view near the mask in FIG.

FIG. 5 is a flowchart showing a main routine of the present embodiment.

FIG. 6 is a flowchart showing an interrupt processing routine interrupted by turning on and off a signal output from the edge detection sensor.

FIG. 7 is a flowchart showing an interrupt processing routine interrupted when a signal from the rear end detection sensor is input.

FIG. 8 is a flowchart showing a routine for detecting the distance from the trailing edge of the negative film to the center position of the window.

[Explanation of symbols]

N negative film (photographic film) P photographic paper 10 Printer Processor 12 Negative film carrier (film carrier) 172 Rear edge detection sensor (photographic film edge detection means) 176 Edge detection sensor (image frame detection means)

Claims (2)

(57) [Claims] 1. An input unit for inputting an instruction signal indicating an instruction to position an image frame recorded on the photographic film at an exposure position for printing and exposing the image frame recorded on the photographic film. An image frame detecting unit that detects the image frame, a photographic film edge detecting unit that detects the photographic film edge on the upstream side in the transport direction, and an image frame located closest to the photographic film edge include the exposure position. Only the judgment means for judging whether or not it is located in the area downstream of the exposure position in the transport direction, and the portion of the photographic film located at the exposure position.
When the judgment result is a negative judgment and the judgment result is a negative judgment, and the image frame to be subjected to the next printing exposure detected is located at the exposure position, the judgment result is a positive judgment. In the case where the instruction signal is input ,
The detection is performed at the position projected on the monitor in the exposure position.
Put the photographic film so that the edge of the photographic film is positioned.
After the film edge is detected, the photographic film edge detection means
A film carrier including a transporting unit that transports the photographic film by a distance from the position . 2. An input device for inputting an instruction signal representing an instruction to position an image frame recorded on the photographic film at an exposure position for printing and exposing the image frame recorded on the photographic film. film a photographic film separation preventive method in the carrier, the upstream side of the photographic film unrealized said exposure position from <br/> conveyance direction downstream side image frame is the exposure position located closest to the end Of the photographic film, and the portion of the photographic film located at the exposure position.
A step of displaying on a monitor, and when the judgment result is negative judgment and the instruction signal is input, the detected image frame to be printed next is positioned at the exposure position, and the judgment result is positive. In the case of judgment and when the instruction signal is input ,
At the position projected on the monitor in the exposure position
Uni I which is detected photographic film end position, the photographic
Photo film edge detection means after the film edge is detected
And a step of transporting the photographic film by a distance from the position to the position .